- A Atresia
- B Zona pellucida
- C Acrosome
- D Granulose cells
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Answer:
A
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During the development of the female reproductive system, germ cells divide mitotically and give rise to millions of oogonia. However, most of these oogonia undergo degeneration and only a few of them develop into mature eggs. This process of degeneration is known as atresia. Atresia occurs during both fetal development and after birth, and it is estimated that only about 400,000 oocytes are present in the ovaries at puberty.
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